255772767 has 4 divisors (see below), whose sum is σ = 341030360. Its totient is φ = 170515176.

The previous prime is 255772757. The next prime is 255772771. The reversal of 255772767 is 767277552.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 255772767 - 2¹¹ = 255770719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255772747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42628792 + ... + 42628797.

It is an arithmetic number, because the mean of its divisors is an integer number (85257590).

Almost surely, 2^255772767 is an apocalyptic number.

255772767 is a deficient number, since it is larger than the sum of its proper divisors (85257593).

255772767 is an equidigital number, since it uses as much as digits as its factorization.

255772767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85257592.

The product of its digits is 1440600, while the sum is 48.

The square root of 255772767 is about 15992.8973922801. The cubic root of 255772767 is about 634.7724954324.

The spelling of 255772767 in words is "two hundred fifty-five million, seven hundred seventy-two thousand, seven hundred sixty-seven".